Reducer adapted to Sky-Watcher 120ED refractors. It is used to reduce the focal length to 0.85x, it improves the field correction (it is a flattener or flattener). By using the Sky-Watcher Canon M48x0.75 adapter or Sky-Watcher Nikon M48x0.75, you can connect the camera to the regulator.

In the ED 120 refractor, it reduces the focal length to 765 mm, making the refractor the device for brightness f / 6.38 and a very flat field of view. Note: Each ED Sky-Watcher refractor needs a dedicated reducer. The ED 80 and ED 100 reducers are also different, dedicated to specific models.